This doesn't mean anything. All it does mean is that none of these listed cards can do an EAX4 HD, thats for sure... Or they simply don't support OpenAL which is required by SB cards lately in order to use hardware features. Besides, ALL Creative soundcards can perform EAX operations on their own APU. Of course on different levels with different performance (X-Fi is logically way faster even in EAX2 than Live! 5.1 because of raw APU power plus it can even handle higher EAX versions).